Some common ways to create DGAlgebras include koszulComplexDGA, freeDGAlgebra, setDiff, and acyclicClosure.
The object DGAlgebra is a type, with ancestor classes MutableHashTable < HashTable < Thing.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/DGAlgebras.m2:1679:0.